Diffusion in agar cubes Introduction: All cells are dependent on a processes called diffusion‚ which is the movement of a substance from an area of higher concentration to an area of lower concentration. Cells need to obtain certain essential substances‚ like oxygen‚ for their survival. The rate of diffusion is said to be dependent upon the various factors: Size of molecules that have to diffuse‚ concentration gradient‚ the distance across which diffusion occurs‚ number of pores/openings‚ surface
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growth of bacteria on Agar plates Hypothesis: That the bacteria will grow in colonies throughout the agar plates except for the one with the anti-biotic loop because some will fight off the bacteria. Method: (Method taken from prac sheet) Plate 1: Use the swab to cover your entire agar plate in your bacteria. You only need one swab of bacteria but be careful to cover the entire surface of your agar in a layer of bacteria. Carefully place an Antibiotic Mastring on top of the agar (use tweezers) in the
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Prompt 14: The significance of Mein Kampf throughout The Book Thief. Adolf Hitler’s Mein Kampf is a highly significant aspect of The Book Thief‚ both symbolically and literally. In many instances throughout the novel‚ Hitler’s infamous work of literature was used against the Nazi regime to bring protection and safety to those in possession of the novel. Alternatively‚ Mein Kampf was also wielded by a majority of German nationals as a source of guidance and assurance in the chaotic economic state
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WI and I’m writing a letter to all the schools of Wisconsin to put the book Mein Kampf by Adolf Hitler under review because of its R - rated material that should be banned from all schools. This book must to be banned from all Wisconsin schools because of its violent‚ racist‚ and anti-semitic content. This book should not be allowed in schools what so ever and there needs to be a end to it now. First off the book Mein Kampf needs to be banned because of its violent content. For example in the
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unknown organisms provided by the instructor in a nutrient broth. It is only known that the two organisms are from vomit; one is gram-positive and the other is gram-negative. It is necessary to first separate the two organisms by inoculating a nutrient agar plate using the streak-plate method. The initial streak-plate procedure was performed and placed in the incubator at 37◦C for 24-48 hours. Upon observing the growth on this plate‚ it is fairly obvious that one of the organisms is Serratia marcescens
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Biology Assessment: Influenza Structure: Viruses are non-cellular obligate intracellular parasites‚ requiring a living host cell in order to reproduce. A developed viral particle (virion) lacks the metabolic machinery of cells‚ containing just a single type of nucleic acid (DNA or RNA) encased in a protein coat or capsid. Viruses can be distinguished by their structure and by the nature of their genetic material (single or double stranded DNA or RNA). Viruses that affect humans are more difficult
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Bethany Mullins-Good Tyler Johnson’s 2nd period class Book Report #2 April 20‚ 2017 Mein Kampf – “My Struggle Mein Kampf is a German writing published by Adolf Hitler in 1925. It outlined his ideas about political ideology and his future plans for Germany. Hitler wrote this book while being imprisoned for what he considered to be “political crimes”. He was put in jail a short time after his failed attempt to overthrow the regional government of Bavaria in November 1923‚ during what is
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“It is not truth that matters‚ but victory.” “If you tell a big enough lie and tell it frequently enough‚ it will be believed.” ― Adolf Hitler Mein Kampf should not be banned‚ it should be open for the world to see as it tells the story accurately‚ would be useful as an educational tool for schools‚ and would provide insight to many people over the commonly asked question‚ what was Hitler thinking‚ and was he crazy. There are hundreds of testimonies from the survivors of the holocaust‚ but
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Question: How does the size of the cell affect its efficiency in exchanging substances through several ways‚ like diffusion? Aim: To plan and carry out an investigation to show the relationship between volume/Cm3‚ surface area‚ and diffusion using agar cubes measured in time/s; and to demonstrate‚ using diffusion‚ why the size of cells is limited‚ keeping the room temperature and pressure constant. Hypothesis: I expect to find that when the surface area to volume of a cell reaches a certain level
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17th‚ October 2010 Margarita SA: VOL RATIO AND AGAR BLOCKS Conclusion: For this experiment the agar jelly had to be cut in to five different block sizes‚ after that has been done we had to add all five blocks in to the test tube with the acid and time to see how long it would take for the colour to change from a pinky purple to clear. From this experiment I learnt that the bigger the size of the jelly is the
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